Home / 38,513.20-57,769.80-13,581.40

Finding the Fourth Proportional to 38,513.20, 57,769.80 and 13,581.40

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Solution

The fourth proportional to 38,513.20, 57,769.80 and 13,581.40 is: 20,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,513.20 : 57,769.80 = 13,581.40 : x
  2. Step 2: Convert to fraction form
    38,513.20/57,769.80 = 13,581.40/x
  3. Step 3: Cross multiply
    38,513.20x = 57,769.80 × 13,581.40
  4. Step 4: Simplify right side
    38,513.20x = 784,594,761.72
  5. Step 5: Solve for x
    x = 784,594,761.72/38,513.20
  6. Step 6: Final answer
    x = 20,372.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.